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公开(公告)号：US11511794B2
公开(公告)日：2022-11-29
申请号：US16874660
申请日：2020-05-14
Applicant: DENSO CORPORATION
Inventor： Toshihisa Yamamoto , Naoki Matsuda
Abstract: An electric driver device provides a partial redundancy system that is at least partially redundant, or a full redundancy system. The electric driver device has a plurality of circuit systems. The electric driver device includes, in at least a part of the electric circuit, a common circuit extending over at least two of a plurality of circuit systems. The common circuit includes a power supply and/or a connection line that complements signals. At least one of the power supply circuit, an interface circuit, a power supply cutoff circuit, and a connector is not separated and independent from each other for each redundant circuit system.
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2.发明授权Motor driving device and electric power steering apparatus including motor driving device 有权电动机驱动装置和电动助力转向装置，包括电动机驱动装置公开(公告)号：US08941337B2
公开(公告)日：2015-01-27
申请号：US13965301
申请日：2013-08-13
Applicant: Denso Corporation
Inventor： Nobuhiko Uryu , Naoki Matsuda , Yoshihide Kuroda
CPC classification number: H02P27/06 , B62D5/0484 , B62D5/0487 , H02M7/48
Abstract: In a motor driving device, a first relay portion is connected between a power source and an inverter portion, a second relay portion is connected between the first relay portion and the inverter portion, and a motor relay portion is connected between the inverter portion and a winding group of a motor. Inverter pre-driver circuits respectively drive switching elements of the inverter portion. A first pre-driver circuit drives the first relay portion. A second pre-driver circuit drives the second relay portion and the motor relay portion. A controller controls driving of the inverter portion, the first relay portion, the second relay portion, and the motor relay portion, and detects a failure of the first relay portion, the second relay portion, and the motor relay portion.
Abstract translation: 在电动机驱动装置中，第一继电器部分连接在电源和逆变器部分之间，第二继电器部分连接在第一继电器部分和逆变器部分之间，并且电动机中继部分连接在逆变器部分和逆变器部分之间 绕组组电机。 逆变器预驱动器电路分别驱动逆变器部分的开关元件。 第一预驱动器电路驱动第一继电器部分。 第二预驱动器电路驱动第二继电器部分和马达继电器部分。 控制器控制逆变器部分，第一继电器部分，第二继电器部分和电动机中继部分的驱动，并且检测第一继电器部分，第二继电器部分和电动机中继部分的故障。
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公开(公告)号：US20230069997A1
公开(公告)日：2023-03-09
申请号：US18049413
申请日：2022-10-25
Applicant: DENSO CORPORATION
Inventor： Toshihisa Yamamoto , Naoki Matsuda
Abstract: An electric driver device provides a partial redundancy system that is at least partially redundant, or a full redundancy system. The electric driver device has a plurality of circuit systems. The electric driver device includes, in at least a part of the electric circuit, a common circuit extending over at least two of a plurality of circuit systems. The common circuit includes a power supply and/or a connection line that complements signals. At least one of the power supply circuit, an interface circuit, a power supply cutoff circuit, and a connector is not separated and independent from each other for each redundant circuit system.
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公开(公告)号：US09762050B2
公开(公告)日：2017-09-12
申请号：US13965266
申请日：2013-08-13
Applicant: DENSO CORPORATION
Inventor： Nobuhiko Uryu , Naoki Matsuda
CPC classification number: H02H7/1222 , B62D5/0403 , B62D5/046 , B62D5/0484 , B62D5/0487
Abstract: A motor drive device for driving a motor, which has a plurality of winding pairs, includes a plurality of inverter units for the plurality of winding pairs. The inverter units are coupled in parallel to a power source. A plurality of capacitors provided for the plurality of inverter units, and a plurality of power relays are disposed between the power supply and the inverter units. In particular, a power relay is provided for each of the inverter units. A control unit detects a short failure of the power relay, and simultaneously turns ON the power relays that do not have a short failure. In such manner, damage to the power relays as well as damage to other electronic components of the motor driver device due to a large electric current is prevented.
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